Low temperature and large-scale growth of ZnO nanoneedle arrays with enhanced optical and surface-enhanced Raman scattering properties

Chang, Yu‐Cheng

doi:10.1016/j.snb.2015.11.053

Cited by 25 publications

(8 citation statements)

References 53 publications

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“…Metal NPs grown on 1D ZnO NSs have been highly explored for improved SERS activities. [395][396][397][398][399][400] Wheatear-like ZnO nanoarrays have been fabricated via low-temperature solution growth on the atomic layer deposition-grown ZnO seed layer by Shan et al [401] This provides room to accommodate more silver NPs in the corners and edges of the whisker-type ZnO structures, which results in an increased enhancement factor up to %0.3 Â 10 6 for rhodamine 6 G. The team further performed hydrogenation on ZnO/Ag structure to form H-ZnO/Ag which showed significant improvement in the SERS activity with an EF of %0.49 Â 10 8 with a detection limit of 10 À9 M R6G. This is due to the increase in the porosity and eventually an increase in the overall surface area of the ZnO structure.…”

Section: Sers On Detection Of (Bio-) Organic Moleculesmentioning

confidence: 99%

Plasmonic Solar Energy Harvesting by ZnO Nanostructures and Their Composite Interfaces: A Review on Fundamentals, Recent Advances, and Applications

et al. 2023

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Zinc oxide is one of the inexpensive semiconductors with rich electronic and optical properties. It is studied in energy applications for a long time. The wide bandgap of ZnO either needs structural change or sensitizing via quantum dots, dyes, or metallic nanoparticles (through the plasmonic effect) to absorb visible light for applications in solar energy harvesting devices. This review provides a fundamental insight of plasmonic visible light harvesting by ZnO and an account of recent advances in solar photovoltaic, photoelectrochemical water splitting, and other photoredox activities, such as water quality enhancement and CO2 reduction.

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Section: Sers On Detection Of (Bio-) Organic Moleculesmentioning

confidence: 99%

Plasmonic Solar Energy Harvesting by ZnO Nanostructures and Their Composite Interfaces: A Review on Fundamentals, Recent Advances, and Applications

et al. 2023

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“…Such structures have been designed and fabricated by many synthesisapproaches. [26][27][28][29][30][31][32] But, for 1D nanostructures are most hardly ordered. Although it can be achieved the amplified Raman spectra, the related mechanism of SERS is hard to be revealed.…”

Section: Nanorods and Nanobranches/wiresmentioning

confidence: 99%

Surface-enhanced raman scattering nanostructures potential for biomedical applications

Guo¹

2020

MOJABB

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Owing to the definitely excellent property of nanostructures such as controllable release of ions from the buried nanoscale thin layers, cell response to microscale morphological changes of substrates, distinctively enhancing sensitivity rendered by electrodes with sizes less than 10 micrometers, and dramatically increasing electromagnetic field from local surface plasmon resonance of nanostructures, nanostructures are playing more and more crucial role in the challenging fields. As one of the most sensitive spectroscopic tools, surface enhanced Raman scattering (SERS) shows highly sensitive biological and chemical detection, such as applications for a better biomedical applications and ecotoxicology. It is well known that surfaces with functioned nanostructures often possessthe formation of surface plasma resonance resulted in SERS distinctive enhancement attractively. Therefore, nanostructures(such as nanorods and nanobranches/wires, nanofractal, nanoprisms, and hybrid nanostructures) for SERS are marked aim to provide the related vital information. It should be pointed out that there are a lot of substantial improvements related to the technical innovation in SERS fabrication with anisotropic nanostructures. However, obstacles or challenges are still to prevent these techniques from extensively applying in the practical applications, especially for the SERS-based systems. The significantly crucial case is that it is hard to control anisotropic nanoobjects assembly into ordered structures because the degree of order among the individual building blocks, spatial arrangement and the assembly direction determine the new and/or improved properties.

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“…For the last two decades, ZnO nanostructures have garnered substantial attention because of their prodigious potential for blue and ultra-violet (UV) optoelectronic devices [1][2][3][4][5][6]. Among various nanostructures, 1-dimensional ZnO (e.g., nanorod [7,8], nanoneedle [9,10], nanopillar [11,12], etc.) is one of the most attractive nanoarchitectures due to its short pathway for carrier transport [13], high surface-to-volume ratio for photon collection [14], and low exciton-phonon coupling strength [15].…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive UV Photodiode Composed of β-Polyfluorene/YZnO Nanorod Organic-Inorganic Hybrid Heterostructure

Lee

Kim

et al. 2020

Nanomaterials

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The highly sensitive ultra-violet (UV) photodiode was demonstrated on the organic-inorganic hybrid heterostructure of β-phase p-type polyfluorene (PFO)/n-type yttrium-doped zinc oxide nanorods (YZO-NRs). The device was fabricated through a simple fabrication technique of β-phase PFO coating onto YZO-NRs that had been directly grown on graphene by the hydrothermal synthesis method. Under UV illumination (λ = 365 nm), the device clearly showed excellent photoresponse characteristics (e.g., high quantum efficiency ~690%, high photodetectivity ~3.34 × 1012 cm·Hz1/2·W−1, and fast response time ~0.17 s). Furthermore, the ratio of the photo current-to-dark current exceeds 103 even under UV illumination with a small optical power density of 0.6 mW/cm2. We attribute such superb photoresponse characteristics to both Y incorporation into YZO-NRs and conformation of β-phase PFO. Namely, Y dopants could effectively reduce surface states at YZO-NRs, and β-phase PFO might increase the photocarrier conductivity in PFO. The results suggest that the β-phase p-PFO/n-YZO-NR hybrid heterostructure holds promise for high-performance UV photodetectors.

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Low temperature and large-scale growth of ZnO nanoneedle arrays with enhanced optical and surface-enhanced Raman scattering properties

Cited by 25 publications

References 53 publications

Plasmonic Solar Energy Harvesting by ZnO Nanostructures and Their Composite Interfaces: A Review on Fundamentals, Recent Advances, and Applications

Plasmonic Solar Energy Harvesting by ZnO Nanostructures and Their Composite Interfaces: A Review on Fundamentals, Recent Advances, and Applications

Surface-enhanced raman scattering nanostructures potential for biomedical applications

Highly Sensitive UV Photodiode Composed of β-Polyfluorene/YZnO Nanorod Organic-Inorganic Hybrid Heterostructure

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